# AOK vs Flow Interval

The clearest difference is in-app purchases: AOK at none against Flow Interval's 3. AOK also leads on update cadence (weekly vs every 3 months) and iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Flow Interval sells 3 one-off in-app purchases. AOK asks for nothing beyond the download.

AOK ships an update weekly, Flow Interval every 3 months. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | AOK | Flow Interval |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (34 ratings)](https://appshunter.io/ios/app/aok-adyton-operations-kit/id1519530490/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Free | — |
| Size | 151 MB | 1 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adyton PBC](https://appshunter.io/developer/1462197332) | [Takumi Kanaya](https://appshunter.io/developer/1852755878) |

## What reviewers say

### AOK

[App page](https://appshunter.io/ios/app/aok-adyton-operations-kit/id1519530490)

This suite of tools helps organizations manage personnel, files, and equipment securely. It digitizes hand receipts, streamlines accountability checks, and enables dynamic scheduling for distributed teams. Designed to meet stringent federal information requirements with full data encryption.

**Highlights:** Secure personnel and file management, Digitized hand receipts, Real-time accountability checks, Dynamic team scheduling, Encrypted data at rest and in transit, FIPS 140-2 cryptography

**Features:** Vision Pro support

**In-app purchases:** none


### Flow Interval

[App page](https://appshunter.io/ios/app/flow-interval/id6757172069)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $8.99 | one-time |


## Frequently asked questions

### Is AOK free?

AOK is free to download, with no in-app purchases.

### Is Flow Interval free?

Flow Interval is free to download, with in-app purchases available.

### Do AOK or Flow Interval have ads?

Neither AOK nor Flow Interval shows ads.

### Which is updated more often, AOK or Flow Interval?

AOK ships an update weekly, and Flow Interval every 3 months. Most recently, AOK was updated on October 27, 2026 and Flow Interval on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*