# OneThink vs DailyStackApp

The clearest difference is in-app purchases: DailyStackApp at none against OneThink's 3. DailyStackApp also leads on update cadence (every 4 days vs fortnightly). OneThink's advantage is iOS requirement (16.4 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. OneThink sells 3 in-app purchases, starting at $2.99 per month. DailyStackApp asks for nothing beyond the download.

OneThink ships an update fortnightly, DailyStackApp every 4 days. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | OneThink | DailyStackApp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 67 MB | 13 MB |
| Requires iOS | **16.4** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Florian Josef Fuchs](https://appshunter.io/developer/1682293753) | [Nicolas Christophory](https://appshunter.io/developer/1566016575) |

## What reviewers say

### OneThink

[App page](https://appshunter.io/ios/app/onethink-one-thing-a-day/id6759730520)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneThink Pro (monthly) | $2.99 | per month |
| OneThink Pro (monthly) | $22.99 | per year |
| OneThink Lifetime | $19.99 | one-time |


### DailyStackApp

[App page](https://appshunter.io/ios/app/dailystackapp/id6760545441)

**In-app purchases:** none


## Frequently asked questions

### Is OneThink free?

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

### Is DailyStackApp free?

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

### Do OneThink or DailyStackApp have ads?

Neither OneThink nor DailyStackApp shows ads.

### Which is updated more often, OneThink or DailyStackApp?

OneThink ships an update fortnightly, and DailyStackApp every 4 days. Most recently, OneThink was updated on October 8, 2026 and DailyStackApp 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.*