Chemist Calc vs ARRA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chemist Calc
This app serves as a smart chemistry calculator for converting between moles and grams. It also provides a comprehensive periodic table with element specifications and unit conversion tools.
- Mole to gram conversion
- Gram to mole conversion
- Periodic table with element specifications
- Unit conversion
- Learn chemistry signs
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Chemist Calc is a very smart chemist calculator. You can calculate moles to gram or gram to moles. You also have the whole periodic table elements with specification inside. You can convert between different units and also learn about all chemistry signs.
ARRA
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Kiterjesztett valóság szolgáltatás mindenkinek. Webes felületen könnyedén feltöltheted képeidet és videókat, modelleket vagy akár webhelyet társíthatsz hozzá.
Screenshots
Verdict
The clearest difference is in-app purchases: ARRA at none against Chemist Calc's 1. ARRA also leads on update cadence (every 3 weeks vs every 9 months) and iOS requirement (11.0 vs 16.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Chemist Calc sells 1 one-off in-app purchase. ARRA asks for nothing beyond the download.
Chemist Calc ships an update every 9 months, ARRA every 3 weeks. The most recent releases landed on September 30, 2026 and September 27, 2026 respectively.
| Parameter | Chemist Calc | ARRA |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 136 MB |
| Age rating | 4+ | 4+ |
| Developer | ilan TETRUASHVILI | Stiefel Magyarorszag Terkepkiado Vizualtechnikai es Taneszkozkereskedelmi KFT |
In-app purchases
Chemist Calc
- Remove Ad's$0.99
ARRA
No in-app purchases
