The most useful iPhone apps are the ones that solve a job you do often: planning your day, capturing notes, working with other people, managing focus, or keeping track of passwords. Apple’s App Store collections surface options in these categories, but a featured listing is not a comparative test or proof that an app is right for every person.
Choose apps by the job you need done
There is no universal set of “essential apps.” Start with a recurring friction point, then look for an app that fits how you work and the devices you need to use. Apple’s US, Canadian, and UK App Store collections include examples across planning, notes and documents, collaboration, file access, focus, and password management. The collections vary by region and can change.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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Apple iPhone 14, 128GB, Midnight - Unlocked (Renewed) | $300.00 | Buy on Amazon |
| 2 |
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Apple iPhone 16, 128GB, Pink - Unlocked (Renewed) | $552.01 | Buy on Amazon |
| 3 |
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Apple iPhone 15, 128GB, Black - Unlocked (Renewed) | $409.00 | Buy on Amazon |
| 4 |
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Apple iPhone 13, 128GB, Midnight - Unlocked (Renewed) | $262.00 | Buy on Amazon |
| 5 |
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Apple iPhone 16e, 128GB, Black - Unlocked (Renewed) | $388.34 | Buy on Amazon |
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The apps below are candidates surfaced in those collections, not ranked recommendations. The collection listings alone do not establish each app’s full feature set, compatibility, accessibility, privacy practices, or current pricing.
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If you want help keeping appointments and tasks in view, Apple’s collections include Fantastical, GoodTask, Structured, and Things 3. Consider whether you need a calendar, a task list, or a way to see both together; then check the app’s current listing for the features and devices you require.
#1 Best Overall
- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
- Please check with your carrier to verify compatibility.
- The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charging cable.
- Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
- Fantastical: A candidate to investigate for calendar and planning needs.
- GoodTask: A candidate to investigate for task management.
- Structured: A candidate to investigate if you want to organize plans and tasks.
- Things 3: A candidate to investigate for task management.
These descriptions identify the broad planning category, not a feature-by-feature comparison. Before choosing, check whether the functions you need are free, require a subscription, or involve a paid download, and whether syncing works across your devices.
Notes, documents, and PDFs
For writing, handwritten notes, or document work, Apple’s collections surface Craft, Goodnotes, Notability, Bear, PDF Expert, and Adobe Acrobat Reader. Choose based on what you actually handle: quick notes, longer documents, handwriting, or PDFs. The collection pages do not establish which app is best for a particular workflow.
Rank #2
- 6.1" Super Retina XDR OLED, HDR10, Dolby Vision, 1000nits (typ), 2000nits (HBM), 2556x1179px at 460ppi, 3561mAh Battery
- 128GB 8GB RAM, Apple A18 (3nm), Hexa-core (2x4.04 GHz + 4x2.20 GHz), Apple GPU 5-core, 16‑core Neural Engine
- Rear camera: 48MP, f/1.6, wide + 12MP, f/2.2, ultrawide, Front Camera: 12MP, f/1.9, wide, iOS 18, upgradable to iOS 18.5
- 4G LTE: 1/2/3/4/5/7/8/12/13/14/17/18/19/20/25/26/28/29/30/32/34/38/39/40/41/42/48/53/66/71, 5G: n1/2/3/5/7/8/12/14/20/25/26/28/29/30/38/40/41/48/53/66/70/71/75/76/77/78/79 - Dual eSIM
- Unlocked for freedom to choose your carrier. Compatible with both GSM & CDMA networks. The phone is unlocked to work with all GSM Carriers & CDMA Carriers Including AT&T, T-Mobile, Verizon, Sprint., Etc.
- Craft, Bear: Options to investigate for notes and documents.
- Goodnotes, Notability: Options to investigate for note-taking.
- PDF Expert, Adobe Acrobat Reader: Options to investigate for PDF work.
Check the current listing for the editing or annotation tools you need, supported file types, pricing terms, and whether your documents sync to the other devices you use. Review privacy disclosures before storing sensitive material.
Collaboration, work, and file access
When your iPhone is part of a work routine, Apple’s collections include Slack, Microsoft Outlook, and Box for collaboration, communications, and file access. Their presence in a collection is not evidence that they meet a particular workplace’s security, administrative, or compatibility requirements.
Rank #3
- 6.1inch Super Retina XDR display. Aluminum with color-infused glass back. Ring/Silent switch
- Dynamic Island. A magical way to interact with iPhone. A16 Bionic chip with 5-core GPU
- Advanced dual-camera system. 48MP Main | Ultra Wide. Super-high-resolution photos (24MP and 48MP). Next-generation portraits with Focus and Depth Control. 4X optical zoom range
- Emergency SOS via satellite. Crash Detection. Roadside Assistance via satellite
- Up to 26 hours video playback. USB C, Supports USB 2. Face ID
- Slack: A collaboration candidate to assess against your team’s setup.
- Microsoft Outlook: A work and communications candidate to assess against your account and calendar needs.
- Box: A file-access candidate to assess against your organization’s storage and sharing requirements.
If an employer or school manages your account, check its approved-app guidance first. Confirm that the app supports the accounts and devices you use, and review how work files and data are handled.
Focus and organizing ideas
For focus or turning thoughts into a visual plan, Apple’s collections include Forest, MindNode, and Structured. These are different kinds of candidates rather than interchangeable recommendations: identify whether you want a focus aid, a way to map ideas, or help organizing your schedule, then check the current listing for relevant details.
Rank #4
- This pre-owned product is not Apple certified, but has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.
- There will be no visible cosmetic imperfections when held at an arm’s length.
- This product is eligible for a replacement or refund within 90 days of receipt if you are not satisfied.
- Product may come in generic Box.
Structured also appears among the planning options above; evaluate it according to the job you want it to do rather than installing it simply because it appears in more than one category.
Password management
Apple’s collections include 1Password as a password-management candidate. Before using any password manager, verify its current pricing, supported devices, sign-in and recovery process, and privacy information. If you need to use passwords across Apple and non-Apple devices, confirm that the current app supports your setup.
Best Value
- 6.1" Super Retina XDR OLED, HDR10, 800 nits (HBM), 1200 nits (peak), 2532x1170px at 460ppi, 4005mAh Battery
- 8GB RAM, Apple A18 6-core CPU (2 performance + 4 efficiency cores), Apple GPU 4-core, 16‑core Neural Engine
- Rear camera: 48MP, f/1.6, wide, Front Camera: 12MP, f/1.9, wide, iOS 18.3.1, upgradable to iOS 18.5
- Connectivity: Global 4G LTE, Sub-6 GHz 5G, LTE, Wi-Fi 6, Bluetooth 5.3, NFC, USB-C, Wireless Charging (7.5W). (does not have mmWave 5G or MagSafe or physical SIM card) - Dual eSIM Only
- Unlocked for freedom to choose your carrier. Compatible with both GSM & CDMA networks. The phone is unlocked to work with all GSM Carriers & CDMA Carriers Including AT&T, T-Mobile, Verizon, Straight Talk., Etc.
Check an app before you install it
- Search your local App Store. Apple’s US, Canadian, and UK collections can differ, so confirm that the app is available in your storefront and that its current name and description match what you want.
- Check compatibility. Read the listing for iPhone and iOS requirements, and confirm support for any other devices you rely on.
- Understand the cost. Check whether the required feature is free, subscription-based, or a paid download, along with the current terms.
- Review privacy and permissions. Read the app’s current privacy disclosures and consider whether its data practices suit the information you plan to enter.
- Test the everyday workflow. Make sure capture, access, and syncing work the way you need before moving important information into the app.
Apple Support says getting apps from the App Store on iPhone requires an internet connection and an Apple Account.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
