Giveffect vs CallHarborUC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Giveffect
This app helps nonprofits manage constituents, events, and volunteers. It allows for location-based contact searches and features tools for checking participants in and out, tracking hours, and validating event tickets.
- Constituent management
- Event management
- Volunteer check-in/out
- Location-based search
- Ticket validation (QR code/number)
- Driver's license scanning
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Giveffect is built for nonprofits. This app is designed as a Constituent Management, Events Management, and Volunteer/Participant check-in & check-out tool. Users must have an account with Giveffect to manage their nonprofit organization with this app. Simply login using your account credentials to access your organization's events, volunteers and contact database. Location based search: This app allows administrators to search for contacts in the database based on their location. With your location data, you can query your database for contact addresses within a set radius. If your location is not provided as search parameters, then the spatial query is ignored. Key features include: - Add constituents to your database. - Scan driver's license data via 2D barcode (PDF417) using the camera, or magnetic stripe. - Search constituent database by name or nearby location via GPS coordinates. - Check-in & Check-out Volunteers and Event Participants to track volunteer hours and attendance. - Validate Event tickets manually by ticket number, or automatically by scanning ticket QR codes using the device camera.
CallHarborUC
This app allows you to use your professional phone extension on your mobile device. Make and receive calls from anywhere, and enjoy free in-app calls with other users.
- Carry your extension on mobile
- Make and receive calls on the go
- Log in with existing credentials
- Free in-app calls among users
- High-quality audio
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Transform your communication with the CallHarborUC app. Seamlessly carry your extension wherever you go, enabling you to make and receive calls on the move. With just a few taps, log in using your CallHarbor credentials to instantly access your extension. Stay connected and in control of your professional communications effortlessly with CallHarborUC. With our application, you can enjoy more than just the standard VoIP features. We enable free in-app calls among application users, utilizing top-notch audio quality.
Screenshots
Verdict
The clearest difference is rating: Giveffect at 5.0 against CallHarborUC's 3.8. Giveffect also leads on update cadence (fortnightly vs every 9 months) and device support (3 vs 1). CallHarborUC's advantage is ratings volume (8 vs 2). On price, review sentiment, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Giveffect holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
Giveffect ships an update fortnightly, CallHarborUC every 9 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.
| Parameter | Giveffect | CallHarborUC |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.8 (8 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 2 | 8 — better |
| Update frequency | Fortnightly — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 26 MB | 115 MB |
| Age rating | 4+ | 17+ |
| Developer | Giveffect, Inc. | Active Solutions Group, Inc. |
Customer experience
Giveffect
CallHarborUC
In-app purchases
Giveffect
No in-app purchases
CallHarborUC
No in-app purchases









