# Simple Aligner Timer vs SmileProgress

The clearest difference is in-app purchases: Simple Aligner Timer at none against SmileProgress's 1. Simple Aligner Timer also leads on update cadence (every 9 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SmileProgress sells 1 one-off in-app purchase. Simple Aligner Timer asks for nothing beyond the download.

Simple Aligner Timer ships an update every 9 days, SmileProgress every 4 weeks. The most recent releases landed on September 16, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | Simple Aligner Timer | SmileProgress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 4 weeks |
| Size | 4 MB | 37 MB |
| Requires iOS | **17.2** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YUNOSUKE TAKAHASHI](https://appshunter.io/developer/1895262960) | [Naoki MORI](https://appshunter.io/developer/1792772188) |

## What reviewers say

### Simple Aligner Timer

[App page](https://appshunter.io/ios/app/simple-aligner-timer/id6763320886)

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

**In-app purchases:** none


### SmileProgress

[App page](https://appshunter.io/ios/app/smileprogress/id6780383136)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keep Recording (one-time) | $0.99 | one-time |


## Frequently asked questions

### Is Simple Aligner Timer free?

Simple Aligner Timer is free to download, with no in-app purchases.

### Is SmileProgress free?

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

### Do Simple Aligner Timer or SmileProgress have ads?

Neither Simple Aligner Timer nor SmileProgress shows ads.

### Which is updated more often, Simple Aligner Timer or SmileProgress?

Simple Aligner Timer ships an update every 9 days, and SmileProgress every 4 weeks. Most recently, Simple Aligner Timer was updated on September 16, 2026 and SmileProgress on August 26, 2026.

---

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