# StelaClock vs RC Pit Calc Pro

The clearest difference is price: RC Pit Calc Pro at Free against StelaClock's $3.99. RC Pit Calc Pro also leads on update cadence (every 5 days vs every 29 months) and ratings volume (24 vs 5). StelaClock's advantage is in-app purchases (none vs 3) and review sentiment (86% vs 60%). On rating, ads and device support there is nothing between them.

RC Pit Calc Pro is free to download; StelaClock costs $3.99 up front. RC Pit Calc Pro sells 3 one-off in-app purchases. StelaClock asks for nothing beyond the download.

StelaClock holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 5 and 24 respectively. Written reviews point the same way: 86% of StelaClock's written reviews are positive against 60% of RC Pit Calc Pro's.

StelaClock ships an update every 29 months, RC Pit Calc Pro every 5 days. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | StelaClock | RC Pit Calc Pro |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/stelaclock/id528908559/reviews)** | [4.4 (24 ratings)](https://appshunter.io/ios/app/rc-pit-calc-pro/id1562268871/reviews) |
| Number of ratings | 5 | **24** |
| Positive reviews | **85.7% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 7 MB | 59 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gary Saggu](https://appshunter.io/developer/465733546) | [Degree3, Inc.](https://appshunter.io/developer/1497876563) |

## What reviewers say

### StelaClock

[App page](https://appshunter.io/ios/app/stelaclock/id528908559)

Discover the Mayan calendar and number system with this educational clock app. It displays the current time and date using Mayan glyphs and a Base 20 notation, offering a unique way to experience ancient Maya culture.

**Highlights:** Mayan calendar display, Mayan number system, Vigesimal (Base 20) notation, Sophisticated calendar converter, Mayan glyph numerals, Daily use clock

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

**In-app purchases:** none


### RC Pit Calc Pro

[App page](https://appshunter.io/ios/app/rc-pit-calc-pro/id1562268871)

This app offers a suite of specialized calculators for RC car enthusiasts. It helps with gear ratios, suspension geometry, corner weights, oil viscosity, fuel usage, and top speed estimations. It also stores data for multiple cars and includes helpful guides.

**Highlights:** Gear ratio calculation, Suspension geometry analysis, Corner weight balancing, Shock oil viscosity adjustment, Fuel usage and pit stop planning, Top speed estimation, Oil blending for custom viscosity

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime backer | $2.00 | one-time |
| Lifetime Backer | $4.00 | one-time |
| Lifetime Backer | $4.99 | one-time |


## Frequently asked questions

### Is StelaClock free?

StelaClock costs $3.99, with no in-app purchases.

### Is RC Pit Calc Pro free?

RC Pit Calc Pro is free to download, with in-app purchases available.

### Which has better reviews, StelaClock or RC Pit Calc Pro?

StelaClock is rated higher. StelaClock averages 4.6 out of 5 from 5 ratings, while RC Pit Calc Pro averages 4.4 from 24 ratings.

### Do StelaClock or RC Pit Calc Pro have ads?

Neither StelaClock nor RC Pit Calc Pro shows ads.

### Which is updated more often, StelaClock or RC Pit Calc Pro?

StelaClock ships an update every 29 months, and RC Pit Calc Pro every 5 days. Most recently, StelaClock was updated on October 10, 2026 and RC Pit Calc Pro on October 5, 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.*