# Molarity Abacus vs refueling registration

The clearest difference is rating: Molarity Abacus at 4.5 against refueling registration's 1.0. Molarity Abacus also leads on ratings volume (15 vs 1) and iOS requirement (8.0 vs 16.0). refueling registration's advantage is update cadence (every 2 days vs every 12 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Molarity Abacus sells 1 one-off in-app purchase and refueling registration sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Molarity Abacus holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Molarity Abacus has 15 ratings behind it against 1, so its average is the more settled of the two.

Molarity Abacus ships an update every 12 months, refueling registration every 2 days. Both last shipped on October 7, 2026.

## The numbers

| Metric | Molarity Abacus | refueling registration |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/molarity-abacus/id915807653/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/refueling-registration/id6740069443/reviews) |
| Number of ratings | **15** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 2 MB | 5 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Oak Driven LLC](https://appshunter.io/developer/915807656) | [文元 粘](https://appshunter.io/developer/1734109361) |

## What reviewers say

### Molarity Abacus

[App page](https://appshunter.io/ios/app/molarity-abacus/id915807653)

Easily calculate molarity, solution volume, solute mass, or molecular weight by inputting any three variables. Customize units and access pre-configured strong acids and bases. An in-app purchase allows for creating and storing custom compounds.

**Highlights:** Molarity calculation, Solute mass calculation, Total solution volume calculation, Molecular weight calculation, Customizable units, Pre-configured compounds, Create and store custom compounds

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Create and Save Compounds | Free | one-time |


### refueling registration

[App page](https://appshunter.io/ios/app/refueling-registration/id6740069443)

Easily track and manage vehicle fuel expenses with AI-powered receipt recognition and detailed analytics. Optimize costs and improve fleet management efficiency.

**Highlights:** AI fuel receipt recognition, Automatic price inquiry, Fuel consumption analysis, Mileage statistics, Cost accounting, iCloud sync, Local data backup

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro member monthly | $0.99 | per month |
| Pro member annual | $2.99 | per year |
| Pro member Lifetime | $7.99 | one-time |
| 终身Pro版会员 | $39.99 | one-time |


## Frequently asked questions

### Is Molarity Abacus free?

Molarity Abacus is free to download, with in-app purchases available.

### Is refueling registration free?

refueling registration is free to download, with in-app purchases available.

### Which has better reviews, Molarity Abacus or refueling registration?

Molarity Abacus is rated higher. Molarity Abacus averages 4.5 out of 5 from 15 ratings, while refueling registration averages 1.0 from 1 ratings.

### Do Molarity Abacus or refueling registration have ads?

Neither Molarity Abacus nor refueling registration shows ads.

### Which is updated more often, Molarity Abacus or refueling registration?

Molarity Abacus ships an update every 12 months, and refueling registration every 2 days. Most recently, Molarity Abacus was updated on October 7, 2026 and refueling registration on October 7, 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.*