Reciprocity Plus vs Zone System
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Reciprocity Plus
This app simplifies long exposure photography calculations for both digital and analog cameras. It includes a vast library of filter effects and reciprocity charts, allowing users to design or modify their own. A built-in timer ensures accurate exposure timing even when the app is not in use.
- Long exposure calculation
- 29 filter effects (CTO, CTB, ND, etc.)
- 110+ reciprocity charts
- Customizable chart design
- Built-in timer
- Support for digital and analog photography
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Reciprocity+ : photo tool, for calculating long exposure, for digital and analog photography. Are you tired of mentally multiplying exposure time with yor ND3+ND8 filters, and then adding reciprocity failure rate ? Reciprocity + is for you : • 29 Filters : CTO, CTB, Green series, ND serie and more • 110 Reciprocity charts included. • Design your own chart or modify an existing one • Share your charts with PInhole Assit App, • Share by email •Available charts : • A chart adapted from Jim Shull's The Hole Thing • Two charts for RC photo paper , • 400TX,TMX,TMY,HP5+,100 Delta (source APUG forums) • max 400, T max 100,TRiX & Plus 125, Ilford films (Without Lenses website ) • Official Ilford films. • Ektachrome, Fujichrome, Agfachrome and + from "Using the View Camera". • Arista films (courtesy of David Aimone) • Ilford Pan F, Fuji FP100, Fuji Neopan 100 ACROS, Ektar 100 • Fuji FP 3000B • and more (119 films). • A timer, of You can quit the app, no matter what you do, the timer will notify you when the exposure is over. From the makers of Pinhole Assist.
Zone System
This tool simplifies Ansel Adams' exposure and development method for photographers. It helps measure shadows and highlights, calculate aperture and development times, and preview results with film stock presets.
- Measure shadows and highlights
- Aperture and development calculations
- Preview results with film presets
- ISO and EV calculations
- Simplified Zone System application
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Zone System is a practical tool for applying Ansel Adams’ exposure and development method. • Measure shadows and highlights to set exposure • Get aperture and development (N, N+, N–) calculations • Preview results with film stock presets • Get calculations for aperture, shutter speed, ISO, and EV This app makes the Zone System simpler, faster, and more reliable.
Screenshots
Verdict
The clearest difference is rating: Zone System at 5.0 against Reciprocity Plus's 4.1. Zone System also leads on review sentiment (100% vs 70%) and update cadence (every 9 days vs every 4 months). Reciprocity Plus's advantage is iOS requirement (15.6 vs 17). On price, ratings volume, ads and 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
Reciprocity Plus costs $1.99 and Zone System $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Zone System holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 70% of Reciprocity Plus's written reviews are positive against 100% of Zone System's.
Reciprocity Plus ships an update every 4 months, Zone System every 9 days. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.
| Parameter | Reciprocity Plus | Zone System |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 4.1 (7 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 70.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 3 |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #192 — better |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch, Vision Pro — better |
| Requires iOS | 15.6 — better | 17 |
| Further details — not scored | ||
| Size | 8 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Le bord de la piscine | Davin Nguyen |
Customer experience
Reciprocity Plus
Zone System
In-app purchases
Reciprocity Plus
No in-app purchases
Zone System
No in-app purchases
Questions
Is Reciprocity Plus free?
Is Zone System free?
Which has better reviews, Reciprocity Plus or Zone System?
Do Reciprocity Plus or Zone System have ads?
Which is updated more often, Reciprocity Plus or Zone System?
Other comparisons
