# DayInBook vs Flow

The clearest difference is in-app purchases: Flow at none against DayInBook's 4. Flow also leads on iOS requirement (15.5 vs 17.0). DayInBook's advantage is update cadence (every 3 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. DayInBook sells 4 in-app purchases, starting at $1.99 per month. Flow asks for nothing beyond the download.

DayInBook ships an update every 3 days, Flow every 4 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | DayInBook | Flow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 months |
| Size | 15 MB | 87 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [阳 曹](https://appshunter.io/developer/1599300891) | [Saken Khudaibergenov](https://appshunter.io/developer/495547657) |

## What reviewers say

### DayInBook

[App page](https://appshunter.io/ios/app/dayinbook-fire/id6756570968)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO月订阅 | $1.99 | per month |
| PRO年订阅 | $9.99 | per year |
| AI积分100 | $1.99 | one-time |
| AI积分1000 | $17.99 | one-time |


### Flow

[App page](https://appshunter.io/ios/app/flow-money-tracker/id6780137104)

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

**In-app purchases:** none


## Frequently asked questions

### Is DayInBook free?

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

### Is Flow free?

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

### Do DayInBook or Flow have ads?

Neither DayInBook nor Flow shows ads.

### Which is updated more often, DayInBook or Flow?

DayInBook ships an update every 3 days, and Flow every 4 months. Most recently, DayInBook was updated on October 30, 2026 and Flow on November 5, 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.*