レンズ何持ってく? vs Lens Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
レンズ何持ってく?
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撮影や旅行・イベントの際に、どのレンズを持っていくかを決める時に役立つカアプリです。 各種撮影条件を設定すると、撮影結果がどのように変わるかを視覚的にシミュレーションできます。
Lens Simulator
Visualize any lens's field of view on your camera in real-time. Select a focal length and camera body to see exactly what the lens captures, with 100% mathematical accuracy. Save comparisons and learn about focal lengths.
- Live viewfinder simulation
- 100% accurate field of view
- Supports 50+ camera bodies
- Offline functionality
- Photo capture with metadata
- Side-by-side comparison
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Wondering what 85mm looks like on your Canon R7? Or how wide 24mm feels on a Fujifilm X-T5? Point your phone and see — instantly. Prospekt simulates any focal length on any camera body, live. HOW IT WORKS Choose a focal length from 14mm to 300mm, pick your camera body, and see exactly what that lens sees — in real time, through your iPhone. The field of view is 100% mathematically accurate. Your iPhone automatically switches between its ultra-wide, wide, and telephoto cameras to give you the best image quality at every focal length. No guesswork. No approximations. 50+ CAMERA BODIES Canon: R5 II, R6 III, R7, R10, R50, EOS R, 5D IV Sony: A1, A9 III, A7R V, A7 IV, A6700, ZV-E10 II Nikon: Z9, Z8, Z6 III, Zf, Z50 II Fujifilm: GFX 100 II, X-T5, X-H2S, X-S20 Panasonic: S5 IIX, GH7, G9 II OM System: OM-1 II, OM-5 Leica: M11, SL3, Q3 Hasselblad: X2D, 907X Pentax: K-1 III, K-3 III Sigma: fp L Every major sensor format: Full Frame, APS-C (1.5x & 1.6x), Micro Four Thirds, and Medium Format. WHO IT'S FOR • Choosing between a 35mm and an 85mm? See the difference live • New to photography? Learn what focal lengths actually look like • Scouting a location? Preview your exact framing on the spot • Switching systems? See how crop factor changes your lenses FEATURES • Live viewfinder — 100% accurate field of view simulation • Scroll wheel with haptic snap at popular focal lengths • Full-frame equivalent display — always know your effective focal • 4 aspect ratios: 3:2, 4:3, 16:9, 1:1 • Photo capture with metadata watermark (focal length, crop factor, FF equivalent, aspect ratio) • Offline — no internet required • Landscape-optimized for maximum viewfinder size SAVE & COMPARE Capture snapshots with a built-in watermark showing your settings. Save to your photo library and compare focal lengths side by side. One purchase. No subscriptions. No ads.
Screenshots
Verdict
The clearest difference is price: レンズ何持ってく? at Free against Lens Simulator's $3.99. レンズ何持ってく? also leads on iOS requirement (15.6 vs 17.0). On in-app purchases 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
レンズ何持ってく? is free to download; Lens Simulator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | レンズ何持ってく? | Lens Simulator |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 11 days |
| Ads | — | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | — | iPhone — better |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 10 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Jun Takahashi | Vitalii Kikot |
In-app purchases
レンズ何持ってく?
No in-app purchases
Lens Simulator
No in-app purchases









