Chronodev vs Sun & Moon Position
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chronodev
This app transforms your iPhone or iPad into a darkroom enlarger timer. It uses HomeKit-enabled devices to control your enlarger and safelights, offering features like manual control, metronome for dodging/burning, and automatic test strip creation.
- iPhone/iPad enlarger timer
- HomeKit device control
- Manual enlarger focusing
- Metronome for dodging/burning
- EV stop time adjustments
- Automatic test strip creation
- Voice control support
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Transform your iPhone into an enlarger timer using Chronodev. Chronodev uses HomeKit-enabled wall plugs and lightbulbs to control your enlarger and safelights. Secondhand enlarger timers can be expensive and hard to find. This one costs the price of a wi-fi wall plug. - Control your enlarger and safelight with your iPhone or iPad - Expose prints accurately using the HomeKit-enabled timer - Manual enlarger control for focusing - Use the metronome for dodging and burning - Adjust times using EV stops - Automatically create test strips with incremental exposures, and keep track of exposure times using a handy graph - Automatically turn your safelight off when exposing/focusing - Voice control support for hands-free development - Safe to use in black and white darkrooms when using iOS's built-in red color filter A HomeKit-enabled wall plug and/or lightbulb is required to use all features of this app. Some features (like a basic timer and EV stop calculations) are available without a HomeKit-enabled device.
Sun & Moon Position
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No ads and no account. Sunrise, sunset and moon phase are free. See when and where the sun and moon will be, all in one app. Everything is calculated on your device, so you get the same results in the mountains or at sea with no signal. FREE • Sunrise, sunset and solar noon, golden hour, blue hour, and civil, nautical and astronomical twilight — each with a short “?” explanation • Moonrise, moonset, transit, moon age and illumination, plus the next full and new moon • A compass aligned to true north. When accuracy is poor it tells you to move in a figure-8 instead of hiding it, and you can nudge it by 1° at a time. North-up display is available • Map & Shadow: the direction and length of a pole’s shadow, and the sun and moon directions on the map • Enter a latitude and longitude, or press and hold on the map — works even where map data is outdated • Home Screen widget with today’s moonrise, moonset and moon age PRO • Live view (AR): the sun and moon positions and today’s paths over the camera view. Steady tracking without flicker, matched to your device’s tilt and camera field of view. Works in landscape and on iPad • Overlay the solstice and equinox paths, monthly paths, and up to 6 dates you choose • Jump to any date and time (the moon on a birthday, past or future), plus a monthly moon phase calendar • Find when it’s in this direction: search a year for when the sun or moon reaches a given azimuth (and altitude) • Address and place search, and saved places — each saved with its time zone and shown in local time • Alerts for full moon, new moon, golden hour, blue hour and moonrise — choose which ones and how early ACCURACY • Sunrise and sunset agree with the National Astronomical Observatory of Japan and NOAA’s published solar algorithm to within one minute • Moonrise and moonset follow the same definition as the Japanese almanac (the centre of the moon on the horizon) and agree within two minutes PRIVACY Your location is used only for calculations on your device and is never sent to the developer. Address search uses Apple’s map search. ■ Pricing and auto-renewal The app is free, and everything under FREE stays free. The PRO features are unlocked with any one of these: • Pro Monthly (3-day free trial) • Pro Yearly (3-day free trial) • Pro Lifetime: one payment, for the paid features available today Your local price is shown before you buy. Monthly and yearly include a 3-day free trial (once per person; not for lifetime). Family Sharing is supported. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless auto-renewal is turned off at least 24 hours before the end of the current period, and the renewal is charged within 24 hours before the period ends. You can turn off auto-renewal or cancel at any time in Settings > your Apple Account > Subscriptions. If you buy a paid plan during a free trial, the remaining free period is forfeited. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sunmoon.irodori-labo.com/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: Chronodev at none against Sun & Moon Position's 3. Chronodev also leads on iOS requirement (17.0 vs 26.0). Sun & Moon Position's advantage is update cadence (weekly vs monthly). On price, ads 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. Sun & Moon Position sells 3 in-app purchases, starting at $0.99 per month. Chronodev asks for nothing beyond the download.
Chronodev ships an update monthly, Sun & Moon Position weekly. The most recent releases landed on November 4, 2026 and November 11, 2026 respectively.
| Parameter | Chronodev | Sun & Moon Position |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Kevin Olmats | ryo muranaka |
In-app purchases
Chronodev
No in-app purchases
Sun & Moon Position
- Pro Monthly3 Days trial$0.991 Month
- Pro Yearly3 Days trial$9.991 Year
- Pro Lifetime$24.99
Questions
Is Chronodev free?
Is Sun & Moon Position free?
Do Chronodev or Sun & Moon Position have ads?
Which is updated more often, Chronodev or Sun & Moon Position?
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