Dev Calculator vs ZKIOT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dev Calculator
A free, ad-free developer calculator focused on bitwise operations and base conversions. It supports unsigned integers up to 64 bits and includes features like shifting, rotating, and casting.
- Bitwise operations (AND, NOT, OR, XOR)
- Shifting and rotating
- Casting support
- 64-bit unsigned integer support
- Base conversions
- No ads
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Full featured, completely free, developer calculator with no ads. Designed primarily for bit operations and quick conversion of bases. In-app purchases don't affect features and are only meant as a way to donate to the developer for his effort. Supports bitwise operations like AND, NOT, OR, XOR. Also supports shifting, rotating and casting. This calculator supports unsigned integers up to 64 bits.
ZKIOT
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ZKIOT management background is a mobile phone quick management background tool specially created for Laoxu technology filling equipment. It mainly realizes the digital management of customer service and provides customers with convenient background management services. Trial crowd: customers and dealers who use Laoxu technology filling equipment. Product functions: including daily management of filling equipment, data query, statistical query, equipment map, user management, storage location management, etc.
Screenshots
Verdict
The clearest difference is ads: Dev Calculator at none against ZKIOT's shown. ZKIOT's advantage is iOS requirement (12.0 vs 14.0). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dev Calculator ships an update every 11 days, ZKIOT fortnightly. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.
| Parameter | Dev Calculator | ZKIOT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 11 days — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 64 MB |
| Age rating | 4+ | 17+ |
| Developer | Scott Lassen | Kunming Laoxu Technology Co., Ltd |
In-app purchases
Dev Calculator
No in-app purchases
ZKIOT
No in-app purchases
Questions
Is Dev Calculator free?
Is ZKIOT free?
Do Dev Calculator or ZKIOT have ads?
Which is updated more often, Dev Calculator or ZKIOT?
Other comparisons
