Parallax vs Sheaf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Parallax
This app helps plural individuals manage their system. Create detailed profiles for each member, track who is currently fronting, and log important notes. It offers a privacy-first approach, keeping your data secure and accessible only to you.
- Member profiles with custom avatars and pronouns
- Fronting tracking with history
- Import system data from SimplyPlural
- Push notifications for fronting changes
- Privacy-first data storage
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Parallax is a companion app built for plural systems — whether you're a DID/OSDD system or otherwise plural. Track who's fronting, manage alter profiles with custom avatars and colors, log notes, and stay organized as a system. Features: • Member profiles with avatars, colors, pronouns, etc. • Fronting tracking with history log • Import your system from SimplyPlural • Push notifications for fronting updates • Privacy-first: your data stays yours Built with care for the plural community. Terms of Use: https://parallax-plural-space.vercel.app/terms
Sheaf
This app helps plural systems track members, manage switches, and keep journals. It offers cross-platform support and prioritizes user privacy with an open-source, self-hostable option.
- Track system members and front changes
- Write member and system journals
- Manage member groups
- Send front change notifications
- Cross-platform support (mobile, web, wearable)
- Open-source and self-hostable
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Sheaf is a plurality tracker for plural systems. Create member profiles, track switches, keep journals, send notifications of front changes to others, and more. Built by plural systems, for plural systems. Inclusive of all plural experiences regardless of origin or framing - no required diagnosis, no gatekeeping, no assumptions about how your system "should" work. Designed to be privacy-first and keep the user in control. Sheaf also includes Apple Watch support with a flexible set of complications and widgets that allows you to see your front status at a glance, register switches, and view history all without ever pulling out your phone. Sheaf exists because Simply Plural is shutting down, and the plural community needs somewhere that won't quietly disappear. Sheaf is open source under AGPL: the code is public, the project can be forked, and you can self-host your own instance if you'd rather keep your data on your own infrastructure. Sheaf can import your existing system data from Simply Plural, with support for more tools coming soon. What you can do: - Track system members and front changes - Write member- and system-wide journals - Manage member groups - Send notifications of front changes - Use the hosted service or run your own - Cross-platform: Mobile, wearable, and web clients We're rolling out in stages. Sensitive community data deserves slow-and-correct over fast-and-sorry, so the hosted service is moving carefully through preview before a full public launch.
Screenshots
Verdict
The clearest difference is review sentiment: Sheaf at 100% against Parallax's 55%. Sheaf also leads on rating (4.7 vs 3.6) and in-app purchases (none vs 3). Parallax's advantage is ratings volume (97 vs 3) and iOS requirement (15.1 vs 17.6). On price, update cadence, 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. Parallax sells 3 in-app purchases, starting at $2.99 per month. Sheaf asks for nothing beyond the download.
Sheaf holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: Parallax has 97 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 55% of Parallax's written reviews are positive against 100% of Sheaf's.
Parallax ships an update every 2 weeks, Sheaf fortnightly. Both last shipped on October 25, 2026.
| Parameter | Parallax | Sheaf |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (97 ratings) | 4.7 (3 ratings) — better |
| Positive reviews | 55.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 97 — better | 3 |
| Update frequency | Every 2 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 15.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 47 MB | 24 MB |
| Age rating | 12+ | 4+ |
| Developer | Aziz Naji Ahmed Al Bahal | Lupine Systems |
Customer experience
Parallax
Sheaf
In-app purchases
Parallax
- Parallax Plus$2.991 Month
- Parallax Plus$4.991 Month
- Parallax Plus$6.991 Month
Sheaf
No in-app purchases






