TBC Now vs GreyBand
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TBC Now
Easily find and schedule appointments at donation centers and mobile blood drives. Donors can access their account to view donation history, eligibility, and vital signs.
- Schedule donation appointments
- Find donation centers
- Locate mobile blood drives
- Access donor account
- View donation history
- Check eligibility
- See vital signs
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The Blood Connection (TBC) service areas include South Carolina, North Carolina and Georgia. Anyone can use our app to easily find and schedule appointments at The Blood Connection donation centers and mobile blood drives. TBC blood donors may access their donor account to see blood type, blood pressure, hemoglobin and pulse taken at the time of donation, donation history, and eligibility to donate. TBC accepts volunteer blood donors at age 16 (with signed parental consent) and older. Blood drives are held regularly throughout Upstate South Carolina, Western North Carolina, Raleigh/Triangle Area of North Carolina and Northeast Georgia. Donation centers are located in Greenville, Spartanburg, Easley, Oconee, and Greenwood South Carolina; Hendersonville, Asheville and Raleigh North Carolina. TBC is a 501(c)3 nonprofit licensed by the FDA.
GreyBand
This app syncs with breathalyzers to monitor your blood alcohol content. It helps you build healthier habits and improve your social experiences by keeping you informed about your levels.
- Connects with breathalyzers
- Tracks blood alcohol content
- Builds healthy habits
- Enhances night out experiences
- Provides safety information
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GreyBand connects with breathalyzers to track your levels, build healthy habits, and enhance your night out. Stay informed, stay safe, and have fun!
Screenshots
Verdict
The clearest difference is review sentiment: GreyBand at 100% against TBC Now's 14%. GreyBand also leads on rating (5.0 vs 2.3) and update cadence (every 3 weeks vs every 5 months). TBC Now's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GreyBand holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 120 and 46 respectively. Written reviews point the same way: 14% of TBC Now's written reviews are positive against 100% of GreyBand's.
TBC Now ships an update every 5 months, GreyBand every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | TBC Now | GreyBand |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (120 ratings) | 5.0 (46 ratings) — better |
| Positive reviews | 14.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 120 — better | 46 |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 40 MB | 92 MB |
| Age rating | 4+ | 17+ |
| Developer | The Blood Connection | Greysun Technologies Inc. |
Customer experience
TBC Now
GreyBand
In-app purchases
TBC Now
No in-app purchases
GreyBand
No in-app purchases
Questions
Is TBC Now free?
Is GreyBand free?
Which has better reviews, TBC Now or GreyBand?
Do TBC Now or GreyBand have ads?
Which is updated more often, TBC Now or GreyBand?
Other comparisons
