Calculation Time vs Prism
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculation Time
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Calculation Time — hızlı, şık ve tamamen senin. Günlük hesaplarını takılmadan, anında yap. Toplama, çıkarma, çarpma, bölme, yüzde ve daha fazlası; hepsi tek dokunuşla, gecikme yok. Bu sürümle uygulama tamamen yenilendi: TEMALAR 6 farklı tema arasfrom seç, hesap makineni sana benzet. Cesur ve modern tasarımdan retro LCD ekrana, neon ışıltıdan lüks altına kadar her tarza bir tema. BİLİMSEL MOD Telefonu yan çevir, bilimsel hesap makinesi otomatik açılsın. Üs alma, karekök, trigonometri ve daha fazlası. GEÇMİŞ Yaptığın tüm işlemler kaydedilir. Geri dön, eski sonuçlara tek dokunuşla ulaş. DAHA FAZLASI • Haptik dokunuş — her tuşta hissedilir geri bildirim • Açık ve koyu mod • 5 farklı uygulama ikonu • Dinamik Yazı Tipi desteği • iPhone'una özel akıcı, hızlı deneyim Temel hesap makinesi her zaman ücretsiz. Premium temalar ve ikonlarla uygulamayı tamamen kişiselleştir, dilersen reklamları kaldır. Hesaplamak hiç bu kadar iyi görünmemişti. Keywords (100 karakter, virgülle, boşluksuz — arama için): hesap makinesi,hesaplama,bilimsel,tema,yüzde,matematik,calculator,geçmiş,hızlı,koyu mod What's New (bu sürüm notları): Calculation Time baştan yenilendi! • 6 şık tema — tarzına göre seç • Bilimsel mod (telefonu yan çevir) • İşlem geçmişi • Haptik dokunuş geri bildirimi • 5 alternatif uygulama ikonu • Açık/koyu mod ve Dinamik Yazı Tipi Temel hesap makinesi her zaman ücretsiz.
Prism
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Prism is the calculator that never interrupts. No ads. No subscriptions. No tracking. Just fast, precise math in a design you will actually enjoy. WHY PRISM Most calculator apps interrupt you with full screen ads and lock basic features behind subscriptions. Prism does neither. Everything essential is free forever, and going Pro is a single one-time purchase. FREE FOREVER • Standard and scientific calculator • Exact fraction math: 0.1 + 0.2 = 0.3, and fractions like 2 3/4 • Percent calculations that work the way you expect • Full calculation history with search, notes, and one tap reuse • Copy and paste that just works, even with currency symbols and formatted numbers • Unit converter with length, weight, and temperature • Three handy mini calculators • Classic theme in light and dark PRISM PRO: ONE PURCHASE, YOURS FOREVER • All premium themes • Currency converter with rates for 340+ currencies, works offline • Every unit converter category • All 7 mini calculators: Percentages, Tip & Split, Discount & Tax, Dates, Loan, Unit Price, BMI • History CSV export • Alternate app icons BUILT RIGHT • Precise decimal engine with no floating point surprises • Works fully offline. Currency rates are cached, so the converter works on a plane • Real iPad layout with a two panel landscape view, not a stretched phone app • 12 languages, with right to left support • Privacy first: no data collected, no analytics, no trackers. The only network request the app ever makes is downloading currency rates https://prismcalculator.app/terms https://prismcalculator.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Calculation Time at none against Prism's 1. Prism's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement 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. Prism sells 1 one-off in-app purchase. Calculation Time asks for nothing beyond the download.
| Parameter | Calculation Time | Prism |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 42 months | — |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Mert Cilli | Frame Sixty Labs, LLC |
In-app purchases
Calculation Time
No in-app purchases
Prism
- Prism Pro$3.99









