Atom Calculator vs National Storage Smart Entry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Atom Calculator
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The atom calculator is a tool for calculating the atomic number and the mass number based on numbers of atom components - protons, neutrons, and electrons (or vice versa). In addition, you can define the charge of ions with known numbers of protons and electrons.
National Storage Smart Entry
Access storage facilities and individual units without physical keys. Enjoy a contactless and secure move-in experience. Currently exclusive to National Storage Robina.
- Keyless access to storage center
- Keyless access to storage unit
- Contact-free move-in
- Enhanced security
- Digital access
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Use the National Storage Smart Entry App for keyless access to the centre, and your unit and enjoy a contact-free move-in and increased security without the need for traditional keys or locks. Currently only available at National Storage Robina.
Screenshots
Verdict
The clearest difference is price: National Storage Smart Entry at Free against Atom Calculator's $2.99. National Storage Smart Entry also leads on update cadence (every 3 weeks vs every 35 months). Atom Calculator's advantage is iOS requirement (12.0 vs 15.6). On ads, in-app purchases 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
National Storage Smart Entry is free to download; Atom Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Atom Calculator ships an update every 35 months, National Storage Smart Entry every 3 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.
| Parameter | Atom Calculator | National Storage Smart Entry |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 4.8 (5 ratings) — better |
| Positive reviews | — | 64.3% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 35 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 13 MB | 71 MB |
| Age rating | 4+ | 17+ |
| Developer | Gorasiya Vishal Nanjibhai | National Storage |
In-app purchases
Atom Calculator
No in-app purchases
National Storage Smart Entry
No in-app purchases
Questions
Is Atom Calculator free?
Is National Storage Smart Entry free?
Do Atom Calculator or National Storage Smart Entry have ads?
Which is updated more often, Atom Calculator or National Storage Smart Entry?
Other comparisons
