# Thermo Log vs Soliton Authenticator

The clearest difference is iOS requirement: Thermo Log at 11.0 against Soliton Authenticator's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on September 10, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Thermo Log | Soliton Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Size | 10 MB | 11 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [A&D Company, Limited](https://appshunter.io/developer/894522769) | [Soliton Systems K.K.](https://appshunter.io/developer/400872810) |

## What reviewers say

### Thermo Log

[App page](https://appshunter.io/ios/app/thermo-log/id1540705486)

**Features:** macOS Compatibility

**In-app purchases:** none


### Soliton Authenticator

[App page](https://appshunter.io/ios/app/soliton-authenticator/id1561854930)

**In-app purchases:** none


## Frequently asked questions

### Is Thermo Log free?

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

### Is Soliton Authenticator free?

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

### Do Thermo Log or Soliton Authenticator have ads?

Neither Thermo Log nor Soliton Authenticator shows ads.

### Which is updated more often, Thermo Log or Soliton Authenticator?

Thermo Log ships an update every 5 months, and Soliton Authenticator every 5 months. Most recently, Thermo Log was updated on September 10, 2026 and Soliton Authenticator on May 17, 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.*