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Developer Tools · head to head

GNAT Pro vs TunnelBear

GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Free plan
No
Full reviewWebsite
T

TunnelBear

Cybersecurity

Consumer VPN with a limited free tier and a bear-themed, beginner-friendly app

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only TunnelBear has a free tier, so it costs nothing to try first.
  • Each has a real cost: GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes; TunnelBear free plan's data cap is small compared to competitors offering more generous free allowances.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which GNAT Pro and TunnelBear actually diverge.

Attributes where GNAT Pro and TunnelBear differ
AttributeGNAT ProTunnelBear
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWebwindows, mac, linux, ios, android
CategoryDeveloper ToolsCybersecurity

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in GNAT Pro

Nothing recorded that TunnelBear does not also cover.

Only in TunnelBear

  • Encrypted VPN tunnel
  • Server location switching
  • GhostBear obfuscation
  • Browser extensions
  • Teams account management

What people use each for

The jobs each tool is most often brought in to do.

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot TunnelBear
  • Developing automotive embedded systems with ISO-26262 compliancenot TunnelBear
  • Integrating Ada, C/C++, and Rust components in single codebasenot TunnelBear
  • Managing software supply chain vulnerabilities and SBOMsnot TunnelBear
  • Supporting long-lived software systems spanning decadesnot TunnelBear

TunnelBear

  • Casual browsing protection on public Wi-Finot GNAT Pro
  • Occasional geo-unblocking with a light free allowancenot GNAT Pro
  • Bypassing network-level VPN blocking via obfuscationnot GNAT Pro
  • Managing VPN access for a small team with centralized billingnot GNAT Pro

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

TunnelBear

  • Free plan's data cap is small compared to competitors offering more generous free allowances.
  • Lacks advanced features like dedicated IP addresses or split-tunneling controls found in some rival VPNs.
  • Server network is smaller than large competitors like NordVPN or ExpressVPN.
  • No standalone router-level app, limiting whole-network protection options.

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

TunnelBear

Free
  • FreeFree
    • 2GB of data per month
    • Access to VPN servers
    • Unlimited devices
  • Unlimited$9.99/month
    • Unlimited monthly data
    • All server locations
    • Cheaper on annual/3-year billing
  • Teams$undefined/month
    • Unlimited data
    • 5 connected devices per user
    • Dedicated account manager

Which should you pick?

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from TunnelBear on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Choose TunnelBear if

  • You need encrypted vpn tunnel.
  • You want to start without paying.
  • You work on windows, mac, linux, ios, android.
  • You also want server location switching.
TunnelBear review

Questions people ask

Is GNAT Pro or TunnelBear better?
Neither clearly leads. GNAT Pro starts at On request and TunnelBear at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or TunnelBear?
TunnelBear has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for TunnelBear.
Does GNAT Pro or TunnelBear run on more platforms?
GNAT Pro runs on Web. TunnelBear runs on windows, mac, linux, ios, android.
Can I use TunnelBear for free?
Yes. TunnelBear has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is GNAT Pro best used for?
GNAT Pro is most often used for building certified avionics software meeting do-178b/c standards, developing automotive embedded systems with iso-26262 compliance, integrating ada, c/c++, and rust components in single codebase, managing software supply chain vulnerabilities and sboms. Of those, building certified avionics software meeting do-178b/c standards and developing automotive embedded systems with iso-26262 compliance are not what TunnelBear is typically brought in for.
What can GNAT Pro do that TunnelBear cannot?
TunnelBear covers Encrypted VPN tunnel, Server location switching, GhostBear obfuscation, Browser extensions.

Answered from the vendors’ own pages

GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
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