Reciprocity Plus vs Spot Meter Pro
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.
Spot Meter Pro
This app functions as a professional light meter for film photography, measuring light within a 2° angle of view. It offers customizable settings for aperture, shutter speed, and film speed, along with logging capabilities for readings.
- 2° FOV light metering
- Av and Tv priority modes
- Zone System and Tone Picker metering
- Customizable increments and range
- Log readings
- 1° FOV with telephoto lens
- Meter calibration
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An essential tool for film photography. Designed to function like a real spot meter, Spot Meter Pro measures light within a 2° circular angle of view for accurate exposure value readings. Select your film speed, then adjust aperture or shutter speed for Av or Tv priority. Optionally, adjust the “middle-grey” reading using the Zone System or Tone Picker metering modes to achieve your desired exposure. Additional features: - Customize aperture, shutter speed, and film speed increments and range - Log readings for future reference - iOS devices equipped with a telephoto lens can take a 1° circular angle of view reading - Calibrate the light meter in 1/10th increments - Toggle black & white mode
Screenshots
Verdict
The clearest difference is rating: Spot Meter Pro at 4.5 against Reciprocity Plus's 4.1. Spot Meter Pro also leads on update cadence (every 2 months vs every 4 months) and ratings volume (22 vs 7). Reciprocity Plus's advantage is price ($1.99 vs $4.99). On review sentiment, ads, in-app purchases and monetization model 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 Spot Meter Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Spot Meter Pro holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 7 and 22 respectively. Written reviews complicate that: 73% of Reciprocity Plus's written reviews are positive against 67% of Spot Meter Pro's, so the app with the better star average is not the one people write more warmly about.
Reciprocity Plus ships an update every 4 months, Spot Meter Pro every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Reciprocity Plus | Spot Meter Pro |
|---|---|---|
| Price | $1.99 — better | $4.99 |
| Rating | 4.1 (7 ratings) | 4.5 (22 ratings) — better |
| Positive reviews | 72.7% of reviews — better | 66.7% of reviews |
| Number of ratings | 7 | 22 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 14.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Le bord de la piscine | Tebo Labs Inc. |
Customer experience
Reciprocity Plus
Spot Meter Pro
In-app purchases
Reciprocity Plus
No in-app purchases
Spot Meter Pro
No in-app purchases
Questions
Is Reciprocity Plus free?
Is Spot Meter Pro free?
Which has better reviews, Reciprocity Plus or Spot Meter Pro?
Do Reciprocity Plus or Spot Meter Pro have ads?
Which is updated more often, Reciprocity Plus or Spot Meter Pro?
Other comparisons
