A focused PhoneCheck alternative for refurbished iPhone sellers.
Synapse combines 50-point iPhone inspections, verifiable certificates, and team credit management for resellers who need proof at the point of sale.
- 50-point on-device inspection
- Verifiable certificates
- Shared team credits
Built for the resale workflow.
Most diagnostic tools were built for repair or enterprise asset management. Synapse is built for the moment a refurbished iPhone changes hands — inspect it, certify it, and give the buyer something they can verify.
Capabilities that matter for resale
| Capability | Synapse | Traditional diagnostic tools |
|---|---|---|
| Full iPhone hardware inspection | 50-point, measured on-device | Varies by provider |
| Verifiable certificate | Server-issued, tamper-evident | Not always included |
| Public buyer verification | Scannable, no login required | Not always buyer-facing |
| Shared team credit pool | One pool across every seat | Varies by provider |
| Role-based technician access | Owner, admin, and member roles | Varies by provider |
| Built for refurbishers and resellers | Yes | Often enterprise-oriented |
| Pricing transparency | Public monthly plans | Often quote-based |
| Certificate invalidation after refund | Yes | Varies by provider |
Competitor capabilities vary by provider and plan. This table reflects how Synapse is built, not a claim about any specific product.
Signs Synapse is the right fit
If any of these sound like your operation, the certificate is built for you.
You sell refurbished iPhones online
You list on eBay, Swappa, Back Market, Mercari, or Marketplace and want proof that travels with the device.
Buyers ask for proof beyond photos
Photos show wear, not function. A verifiable certificate answers the question buyers actually have.
Technicians grade inconsistently
A fixed 50-point inspection gives every technician the same checklist, so grades match across the bench.
You want public certificate verification
Buyers confirm a result from a scannable reference — no account, no login, no back-and-forth.
You want simple monthly team pricing
One subscription, one shared credit pool, seats for your whole team. No per-quote negotiation.
You want a reseller-focused workflow
Synapse is built around resale: inspect, certify, and hand the buyer proof at the point of sale.
The certificate is the difference.
Diagnostics tell your team what happened. Certificates let your buyer verify it.
From internal result to buyer-facing proof
- Every certificate is server-issued and tamper-evident, so the result can’t be quietly edited after the fact.
- Buyers verify it from a scannable reference, with no login and no access to private data.
- A refunded purchase invalidates the certificate, keeping proof tied to a real sale.
Related: the 50-point inspection, Synapse for refurbishers, and plans and pricing.
PhoneCheck alternative, answered
How Synapse compares for refurbished iPhone sellers.
Is Synapse a direct PhoneCheck replacement?
Synapse is a focused alternative built for refurbished iPhone sellers. It runs a 50-point hardware inspection and issues a verifiable certificate buyers can confirm, with team seats and a shared monthly credit pool. Whether it replaces your current tool depends on your workflow — Synapse is designed around resale and buyer trust.
What makes Synapse different from traditional diagnostic tools?
The certificate. Traditional tools tell your team what passed and failed. Synapse turns that inspection into a tamper-evident certificate your buyer can verify from a scannable reference, no login required — so the result is something you can hand to the buyer, not just an internal record.
Can buyers verify a Synapse certificate without an account?
Yes. Every certificate is publicly verifiable through a scannable reference with no login. It shows non-PII device facts only — model, iOS version, capacity, pass and fail counts, inspection date, validity, and result.
How does team pricing work compared with enterprise tools?
Synapse uses public monthly plans — Starter, Growth, and Scale — each with a set number of technician seats and certified checks that refill into one shared team pool every period. There is no quote process; you can see the plans and start when you are ready.
Does the inspection run on the device itself?
Yes. The 50-point inspection is measured on-device through the Synapse iOS app — display, touch, cameras, speakers, microphones, sensors, Face ID and Touch ID, buttons, and connectivity — not estimated. The results become the certificate.
Certify your next phone with confidence
Subscribe your shop in minutes. Run the 50-point inspection, issue verifiable certificates, and grade every device the same way — every time.