# TTLok Pro vs Maintain

The clearest difference is in-app purchases: TTLok Pro at none against Maintain's 1. TTLok Pro also leads on iOS requirement (15.0 vs 17.0). Maintain's advantage is ads (none vs shown) and update cadence (daily vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Maintain sells 1 one-off in-app purchase. TTLok Pro asks for nothing beyond the download.

TTLok Pro ships an update every 3 weeks, Maintain daily. The most recent releases landed on November 14, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | TTLok Pro | Maintain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 118 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [深圳市斯凯科技有限公司](https://appshunter.io/developer/1735116041) | [Ezar Ahrend](https://appshunter.io/developer/6795534406) |

## What reviewers say

### TTLok Pro

[App page](https://appshunter.io/ios/app/ttlok-pro/id6479194137)

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

**In-app purchases:** none


### Maintain

[App page](https://appshunter.io/ios/app/maintain-asset-tracker/id6795534404)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Maintain Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is TTLok Pro free?

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

### Is Maintain free?

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

### Do TTLok Pro or Maintain have ads?

TTLok Pro shows ads; Maintain does not.

### Which is updated more often, TTLok Pro or Maintain?

TTLok Pro ships an update every 3 weeks, and Maintain daily. Most recently, TTLok Pro was updated on November 14, 2026 and Maintain on November 13, 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.*