# FieldLogic vs CTM Mobile OA

The clearest difference is update cadence: CTM Mobile OA at every 2 weeks against FieldLogic's every 6 months. FieldLogic's advantage is iOS requirement (11.0 vs 15). 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.

FieldLogic ships an update every 6 months, CTM Mobile OA every 2 weeks. The most recent releases landed on December 28, 2025 and September 15, 2026 respectively.

## The numbers

| Metric | FieldLogic | CTM Mobile OA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 55 MB | 39 MB |
| Requires iOS | **11.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alternative Logic](https://appshunter.io/developer/492559862) | [MACAU TELECOMUNICATIONS COMPANY LIMITED](https://appshunter.io/developer/404138775) |

## What reviewers say

### FieldLogic

[App page](https://appshunter.io/ios/app/fieldlogic/id1048119019)

**In-app purchases:** none


### CTM Mobile OA

[App page](https://appshunter.io/ios/app/ctm-mobile-oa/id1565328108)

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

**In-app purchases:** none


## Frequently asked questions

### Is FieldLogic free?

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

### Is CTM Mobile OA free?

CTM Mobile OA is free to download, with no in-app purchases.

### Do FieldLogic or CTM Mobile OA have ads?

Neither FieldLogic nor CTM Mobile OA shows ads.

### Which is updated more often, FieldLogic or CTM Mobile OA?

FieldLogic ships an update every 6 months, and CTM Mobile OA every 2 weeks. Most recently, FieldLogic was updated on December 28, 2025 and CTM Mobile OA on September 15, 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.*