# ITR vs TEMS™ OnDevice

The clearest difference is update cadence: ITR at monthly against TEMS™ OnDevice's every 6 months. TEMS™ OnDevice's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

ITR ships an update monthly, TEMS™ OnDevice every 6 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ITR | TEMS™ OnDevice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Size | 8 MB | 9 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [International Thermal Research Ltd.](https://appshunter.io/developer/1496252759) | [InfoVista](https://appshunter.io/developer/417612552) |

## What reviewers say

### ITR

[App page](https://appshunter.io/ios/app/itr-neos/id1489761851)

**Features:** macOS Compatibility

**In-app purchases:** none


### TEMS™ OnDevice

[App page](https://appshunter.io/ios/app/tems-ondevice/id1548649639)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ITR free?

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

### Is TEMS™ OnDevice free?

TEMS™ OnDevice is free to download, with no in-app purchases.

### Do ITR or TEMS™ OnDevice have ads?

Neither ITR nor TEMS™ OnDevice shows ads.

### Which is updated more often, ITR or TEMS™ OnDevice?

ITR ships an update monthly, and TEMS™ OnDevice every 6 months. Most recently, ITR was updated on November 7, 2026 and TEMS™ OnDevice on November 3, 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.*