# STELCO vs UMA Tune

The clearest difference is in-app purchases: STELCO at none against UMA Tune's 2. UMA Tune's advantage is update cadence (every 2 weeks vs every 3 months) and rating (3.6 vs 3.3). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. UMA Tune sells 2 one-off in-app purchases. STELCO asks for nothing beyond the download.

UMA Tune holds the better App Store score, 3.6 against 3.3. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews split almost evenly too, at 26% and 26% positive.

STELCO ships an update every 3 months, UMA Tune every 2 weeks. Both last shipped on November 2, 2026.

## The numbers

| Metric | STELCO | UMA Tune |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (8 ratings)](https://appshunter.io/ios/app/stelco/id1357076988/reviews) | **[3.6 (5 ratings)](https://appshunter.io/ios/app/uma-tune/id1405467126/reviews)** |
| Number of ratings | **8** | 5 |
| Positive reviews | **25.7% of reviews** | 25.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 122 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STELCO](https://appshunter.io/developer/1357076987) | [UMA RACING SDN. BHD.](https://appshunter.io/developer/1403287201) |

## What reviewers say

### STELCO

[App page](https://appshunter.io/ios/app/stelco/id1357076988)

Manage your electricity services with ease. Monitor usage, pay bills instantly, and receive outage alerts. This app offers a streamlined experience for controlling your utility accounts from anywhere.

**Highlights:** Real-time usage tracking, Instant bill payments, Account and bill sharing, Multi-account payments, Power interruption alerts, Customer support access, Bill estimation calculator

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

**In-app purchases:** none


### UMA Tune

[App page](https://appshunter.io/ios/app/uma-tune/id1405467126)

Monitor and adjust engine parameters for M5 ECUs. Features include real-time data monitoring, power metering, log analysis, and malf-code reading. Offers advanced tuning capabilities and map sharing.

**Highlights:** Real-time engine data monitoring, Power meter (HP/torque/acceleration), Log data analysis, Malf-code reading, Engine parameter adjustment, Tuning map sharing

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto Tune | $2.99 | one-time |
| Basic Functionality | $9.99 | one-time |


## Frequently asked questions

### Is STELCO free?

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

### Is UMA Tune free?

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

### Which has better reviews, STELCO or UMA Tune?

UMA Tune is rated higher. STELCO averages 3.3 out of 5 from 8 ratings, while UMA Tune averages 3.6 from 5 ratings.

### Do STELCO or UMA Tune have ads?

Neither STELCO nor UMA Tune shows ads.

### Which is updated more often, STELCO or UMA Tune?

STELCO ships an update every 3 months, and UMA Tune every 2 weeks. Most recently, STELCO was updated on November 2, 2026 and UMA Tune on November 2, 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.*