Actually 10% drift is not challenging requirements .
All you have to worry about is quality of capasitor and resistor in RC circuit , power supply stability
opamp general characteristics .
Simply :
Use schmidth trigger Opamp based circuit,
Additionally connect inverting input with output through resistor.Put capasitor between inverting input and ground .These elements will define oscillator frequency .
Schmidth resistors parameters will define hysteresis voltage (affects also frequency as well)